JPS6348583A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS6348583A JPS6348583A JP61193502A JP19350286A JPS6348583A JP S6348583 A JPS6348583 A JP S6348583A JP 61193502 A JP61193502 A JP 61193502A JP 19350286 A JP19350286 A JP 19350286A JP S6348583 A JPS6348583 A JP S6348583A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- developer
- developing
- chamber
- rotating member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 3
- 239000006247 magnetic powder Substances 0.000 claims description 2
- 238000011161 development Methods 0.000 abstract description 9
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000007786 electrostatic charging Methods 0.000 abstract 2
- 238000013019 agitation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 108091008695 photoreceptors Proteins 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 229920006311 Urethane elastomer Polymers 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- -1 polyfluoroethylene Polymers 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（、産業上の利用分野）
本発明は、たとえば電子複写装置、ファクシミリ、プリ
ンタなどに広く応用されている電子写真装置に適用され
る現像装置に係わり、特に−成分もしくはこれに類する
現像剤を用いて静電潜像を現像する現像装置に関する。[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention relates to a developing device applied to an electrophotographic device widely applied to, for example, an electronic copying device, a facsimile machine, and a printer. In particular, the present invention relates to a developing device for developing an electrostatic latent image using a -component or a similar developer.
〈従来の技術）
従来、電子写真装置では、カスケード法やマグネットブ
ラシ法などの現像方法が主に用いられてきているが、近
年、カラー記録に対する実用化要求が強まるなかで、未
定着像の重ね現像に有効な現像方法、すなわち、静電潜
像形成面に非接触状態で現像する現像方法が研究されて
いる。<Conventional technology> Conventionally, development methods such as the cascade method and the magnetic brush method have been mainly used in electrophotographic equipment, but in recent years, with the growing demand for practical use of color recording, A developing method that is effective for development, that is, a developing method that performs development in a non-contact state on the surface on which an electrostatic latent image is formed, is being researched.
この一般に非接触現像法と呼ばれる現像方法に関しては
、米国特許３，２３２，１９０号、英国特許１，４５８
、７６６号、および米国特許３８，６５７号、あるいは
米国特許３，８９３，４１８号などにその基本的手段が
記載されている。Regarding this developing method, which is generally called a non-contact developing method, US Patent No. 3,232,190 and British Patent No. 1,458
, No. 766, and US Pat. No. 38,657, or US Pat. No. 3,893,418, the basic means thereof are described.
これら一連の発明は、円筒状現像部材の表面に現像剤（
以後トナーと称する）の均一な薄い層を形成し、これを
静電潜像面に近接（約５〜５００ミクロン）させるとと
もにこの現像部材と静電潜像形成面間に直流電圧または
交流電圧を偏分させて印加し、トナーを飛翔撮動させ静
電潜像部の電界の強い部分ではトナーを付着させ、非静
電潜像部では飛翔を抑止するか、または交流印加の方法
によるものでは再帰させるようにして選択付着させるこ
とにより現像するものである。In this series of inventions, a developer (
A uniform thin layer of toner (hereinafter referred to as toner) is formed, and this is brought close (approximately 5 to 500 microns) to the electrostatic latent image surface, and a DC or AC voltage is applied between the developing member and the electrostatic latent image forming surface. The toner is applied unevenly, the toner is photographed flying, and the toner adheres to the areas where the electric field is strong in the electrostatic latent image area, and the flying is suppressed in the non-electrostatic latent image area, or alternatively, the toner is applied in an alternating current manner. Development is carried out by selectively adhering it in a recursive manner.
また、米国特許３，８９３，４１８号は、現像された画
像の階調性が、印加する交流電圧の周波数によって変化
することを利用して、階調再現性を周波数の切換によっ
て選択できるようにしたものである。Furthermore, U.S. Patent No. 3,893,418 utilizes the fact that the gradation of a developed image changes depending on the frequency of the applied alternating current voltage, so that the gradation reproducibility can be selected by switching the frequency. This is what I did.
一方、これらの技術において最も重要な技術は、現像剤
として用いるトナーをより均一な層として現像部材（現
像ローラ）上に形成し、かつ均一な帯電を付与すること
であることを見出だし、１でに本発明者は特願昭５９−
３１９７９号あるいは特願昭５８−１４３３４０号ある
いは特願昭５８−１６１２４１号等でトナー層の形成手
段における改良された手段を提供してきた。On the other hand, they discovered that the most important technique in these technologies is to form a more uniform layer of toner used as a developer on a developing member (developing roller) and to apply uniform charge. In addition, the present inventor filed a patent application in 1983-
No. 31979, Japanese Patent Application No. 58-143340, Japanese Patent Application No. 58-161241, etc. have provided improved means for forming a toner layer.
（発明が解決しようとする問題点）
しかしながら、これらのトナー層形成手段のうち、弾性
ブレードを現像部材に当接させてトナー層を形成する方
法は、極めて小型かつ簡単な構成で目的を達することが
できる。しかしながら、「負」の静電潜像を現像するた
め、あるいは「正」の静電潜像を反転現像するために工
種性帯電トナーを用いる場合、その１ｆ擦帯電性向上の
為にトナーに添加すべき帯電抑制剤あるいは樹脂などに
優れたものがなく、現園部材上に層形成されたトナーは
帯電量が不安定で、その結果、画質上かぶりが生じ易い
。また、多湿化で層形成特性が悪くなる等の欠点を生じ
やすいことが判明した。(Problems to be Solved by the Invention) However, among these toner layer forming means, the method of forming a toner layer by bringing an elastic blade into contact with a developing member does not achieve the purpose with an extremely small and simple configuration. Can be done. However, when using an electrostatically charged toner to develop a "negative" electrostatic latent image or to reversely develop a "positive" electrostatic latent image, it is added to the toner to improve its 1F tribostatic properties. There is no superior charge suppressant or resin to be used, and the amount of charge of the toner layer formed on the current member is unstable, and as a result, fogging tends to occur in terms of image quality. It has also been found that high humidity tends to cause drawbacks such as deterioration of layer formation properties.
これは、負特性のトナーを用いた場合に比して、明らか
に劣っており、従来の２成分現像方式においても同じ理
由にもとずく問題点を有していたが、本方式では問題は
更に顕著であり、根本的解決が必要であった。This is clearly inferior to the case where a toner with negative characteristics is used, and the conventional two-component development method also had problems based on the same reason, but this method does not have this problem. It was even more noticeable and required a fundamental solution.
本発明は、上記事情に基づきなされたもので、その目的
とするところは、簡単な構成でありながら、トナー層の
形成と帯電が良好に行われ、使用初期から長期に亙って
かぶりの無い安定した現像状態が得られる現像装置を提
供しようとするものである。The present invention has been made based on the above-mentioned circumstances, and its purpose is to have a simple structure, yet to form and charge a toner layer well, and to be free from fogging from the initial stage of use for a long period of time. It is an object of the present invention to provide a developing device that can provide a stable developing state.
［発明の構成コ
（問題点を解決するための手段）
本発明は、上記問題点を解決するために、粉体現像剤を
収容する第１の部屋と、この第１の部屋と開口部を介し
て連通ずる第２の部屋と、この第２の部屋内に収容され
回転に伴って現像剤を搬送する回転部材と、この回転部
材の近傍に設けられ回転部材を介して供給される現像剤
を静電潜像面に転移させるための現像部材と、前記現像
部材に向けて圧接する状態に設けられ均一な厚さの現像
剤層を前記現像剤上に形成する現像剤規制部材とを具備
してなる構成としたものである。[Structure of the Invention (Means for Solving the Problems)] In order to solve the above problems, the present invention provides a first chamber for accommodating a powder developer, and an opening between the first chamber and the opening. a second chamber communicated through the second chamber; a rotating member accommodated in the second chamber that conveys developer as it rotates; and a developer provided near the rotating member and supplied via the rotating member. a developing member for transferring the image to the electrostatic latent image surface; and a developer regulating member that is provided in pressure contact with the developing member and forms a developer layer of uniform thickness on the developer. The structure is as follows.
（作用）
すなわち、本発明は現像剤を収容する第１の部屋とこれ
に開口部を介して連通し内部に回転部材を収容した第２
の部屋とを設け、前記開口部の大きざを設定することに
より第１の部屋から第２の部屋に少世ずつ現像剤が供給
される状態とし、この状態で回転部材の回転に伴って現
像剤を現像部材に供給するとともに、ついで、現像部材
上の現像剤を現像剤規制部材により均一な饗となるごと
く圧接摺擦するようにしたから、帯電能力以上の冬日の
現像剤が現像剤層形成部に供給されることがなく安定し
た現像剤層の形成が可能となり、しかも、良好な摩擦螢
電を現像剤層形成部に（テなうことが可能となる。(Function) That is, the present invention includes a first chamber containing a developer and a second chamber communicating with the first chamber through an opening and containing a rotating member therein.
By setting the size of the opening, the developer is supplied from the first chamber to the second chamber in small increments, and in this state, the developing agent is supplied as the rotating member rotates. The developer is supplied to the developing member, and then the developer on the developing member is pressed and rubbed by the developer regulating member so that it is evenly distributed, so that the developer on winter days that exceeds the charging capacity will be absorbed into the developer layer. It is possible to form a stable developer layer without being supplied to the developer layer forming section, and moreover, it is possible to apply good tribofluorescence to the developer layer forming section.
また、回転部材の材質や形状を変えることによリ、現像
剤特性に合せた現像装置の設計が可能となり、従来現像
剤の特性改善にのみ頼っていたため本方式現像装置に用
いる現像剤の開発が困難であった点も大幅に改善され、
使用初期から長期に亙っでかぶりのない安定した画像を
得ることが可能となる。In addition, by changing the material and shape of the rotating member, it is now possible to design a developing device that matches the characteristics of the developer.The development of the developer used in this type of developing device, since conventional methods relied only on improving the characteristics of the developer. The difficult points have been greatly improved,
It becomes possible to obtain stable images without fog over a long period of time from the initial stage of use.
（実施例） 以下、本発明の一実施例を図面を参照して説明する。(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
図中１は電子写真装置く図示しない）内に配置された現
像装置であり、この現像装置１は、像担持体としての感
光体ドラム２に対向して配置される。このとき、現像装
置１の現像部材としての現像ローラ３が、感光体ドラム
２の周面からなる公知の手段により潜像が形成される潜
像形成面２ａに所定の間隙Ｇ（０〜５００Ｆ＄）を存し
て固定されるようになっている。この所定の間隙Ｇは、
現像装置本体４のサイドフレーム４ａ、４ａの外側かつ
上記現像ローラ３と同軸状態に設けられたガイドローラ
５，５を感光体ドラム２の両端非画像形成部に転接させ
た状態で装着することにより自動的に設定できるように
なっている。In the drawing, reference numeral 1 denotes a developing device disposed within an electrophotographic apparatus (not shown), and this developing device 1 is disposed facing a photosensitive drum 2 serving as an image carrier. At this time, the developing roller 3 as a developing member of the developing device 1 is placed between a predetermined gap G (0 to 500 F$ ). This predetermined gap G is
Guide rollers 5, 5 provided outside the side frames 4a, 4a of the developing device main body 4 and coaxially with the developing roller 3 are mounted in rolling contact with the non-image forming portions at both ends of the photosensitive drum 2. can be set automatically.
また、現（！ＩｉＡ置本装４内には仕切り板６が設けら
れ、内部にＩ！ １１帯電可能な平均粒径が５〜２０譚
の一成分系の磁性または非磁性の現像剤（以下トナーと
称する）７を収容する第１の部屋８と、この第１の部屋
８と開口部９を介してのみ連通する第２の部屋１０とが
形成された状態となっている。In addition, a partition plate 6 is provided in the present (!IiA) mounting device 4, and a one-component magnetic or non-magnetic developer (hereinafter referred to as A first chamber 8 that accommodates toner (referred to as toner) 7 and a second chamber 10 that communicates with the first chamber 8 only through an opening 9 are formed.
上記第１の部屋８内の底部、すなわち、第１の部屋８と
第２の部屋１０とを連通する前記間口部つと対応する位
置には、トナー７の空洞現像を防止するための羽根車状
の攪拌部材１１が設けられている。At the bottom of the first chamber 8, that is, at a position corresponding to the opening that communicates the first chamber 8 and the second chamber 10, there is an impeller-shaped impeller-like structure for preventing cavity development of the toner 7. A stirring member 11 is provided.
また、上記第２の部屋１０内には、回転に伴ってトナー
７を搬送する回転部材１２およびこの回転部材１２の近
傍に設けられ回転部材１２を介して供給されるトナー７
を静電虐政面２ａに転移させるための上記現像ローラ３
が収容された状態となっている。The second chamber 10 also includes a rotating member 12 that conveys the toner 7 as it rotates, and a toner 7 that is provided near the rotating member 12 and is supplied via the rotating member 12.
the developing roller 3 for transferring the image to the electrostatic surface 2a;
is in a contained state.
また、前記仕切り板６の下端は、スリット状の間口部９
を形成するように底部近傍まで延出した状態となり開口
部９を通過して回転部材１２により見込されるトナー７
の量を規制するようになっている。Further, the lower end of the partition plate 6 has a slit-shaped frontage 9.
The toner 7 extends to the vicinity of the bottom so as to form a
The amount of water is regulated.
また１、上記上記回転部材１２は、スポンジ状のウレタ
ン・スチレンブタジェンゴムなどの弾性体からなる材料
、あるいはポリフルオロエチレン（商品名テフロン）、
アクリル、レーヨンなどの繊維からなるブラシ状材料、
あるいは表面に多数の磁擺を配列してなる磁石ロールに
表面酸化処理鉄粉あるいはフェライト粉を吸着してなる
磁気ブラシ等の中から選ばれる。1. The rotating member 12 is made of an elastic material such as sponge-like urethane/styrene-butadiene rubber, or polyfluoroethylene (trade name: Teflon).
Brush-like materials made of fibers such as acrylic and rayon,
Alternatively, it is selected from among magnetic brushes made by adsorbing surface oxidized iron powder or ferrite powder to a magnetic roll having a large number of magnetic rods arranged on its surface.
この回転部材１２には、スリット状の開口部９を介して
第１の部屋８から送られてきたトナー７を適量表面に載
せて現像ローラ３に摺擦させるようになっている。この
とき、回転部材１２の回転スピードおよび回転部材１２
に供給されるトナー７の量に応じて現像ローラ３との間
に少量のトナー７の溜り１４が形成された状態となる。An appropriate amount of the toner 7 sent from the first chamber 8 through the slit-shaped opening 9 is placed on the surface of the rotating member 12, and the developing roller 3 rubs the toner 7 thereon. At this time, the rotational speed of the rotating member 12 and the rotational speed of the rotating member 12
Depending on the amount of toner 7 supplied to the developing roller 3, a small amount of toner 7 accumulates 14 between the developing roller 3 and the developing roller 3.
このようにしてトナー７は、搬送中に不十分ながら摩擦
帯電をしながら現像ローラ３に次々塗布される。トナー
７の正帯電を助長するためにはテフロンが有効である。In this way, the toner 7 is applied to the developing roller 3 one after another while being tribo-electrified, albeit insufficiently, during transportation. Teflon is effective for promoting positive charging of the toner 7.
また、この意味で、他の磁性粉やスポンジ、ブラシの材
質を選ぶ。Also, in this sense, choose other magnetic powder, sponge, and brush materials.
また、上記現像ローラ１２に虐接する状態に現像剤規制
部材としてのトナー規制体１５が設けられている。この
トナー規制体１５はリンＲ銅板。Further, a toner regulating body 15 as a developer regulating member is provided in a state in which it comes into contact with the developing roller 12 . This toner regulator 15 is a phosphorus R copper plate.
ステンレス板、ウレタンゴムブレードなどからなる金属
製あるいは非金属製の弾性板からなり、現像ローラ１２
の周面に形成されたトナー１７′の厚さを均一、かつ所
望の厚さである２０〜５０−とするとともに、同時に摩
擦によりトナー７に所望の電荷たとえば正極性の電荷な
生じさせるようになっている。The developing roller 12 is made of a metallic or non-metallic elastic plate such as a stainless steel plate or a urethane rubber blade.
The thickness of the toner 17' formed on the circumferential surface of the toner 7 is made uniform and has a desired thickness of 20 to 50 mm, and at the same time, a desired charge, such as a positive charge, is generated on the toner 7 by friction. It has become.
摩擦帯電の大きさや極性は、トナー７の材質と上記トナ
ー規ゐ１ｊ体１５．現像ローラ３などの摩擦部材の材質
および摩擦の大きさにより変化する１；め種々知られた
経験にもとすいて最適な組合せを行なう。The magnitude and polarity of frictional electrification depend on the material of the toner 7 and the above-mentioned toner specifications. The optimum combination is determined based on various known experiences.
しかして、現像ローラ３上に正極性で形成されたトナー
層７′は、次いでマイナス４００〜８００ボルトの静電
潜像を形成した感光体ドラム２に近接し、マイナス０〜
２００ボルトの直流現像バイアスあるいはマイナス側に
Ｏ〜２００ボルト偏奇したピークトウーピーク値が８０
０〜１６００ボルトの交流電圧（周波数２００ Ｈｚ以
上〜４ＫＨｚ以下）を感光体ドラム２とＳ電性の現像ロ
ーラ３との間に印加することにより潜像に応じてトナー
７を転移させて現像を行なうことになる。The toner layer 7' formed with positive polarity on the developing roller 3 then approaches the photoreceptor drum 2 on which the electrostatic latent image of minus 400 to 800 volts has been formed.
200 volts DC developing bias or O to 200 volts biased to the negative side with a peak-to-peak value of 80
By applying an AC voltage of 0 to 1,600 volts (frequency of 200 Hz or more to 4 KHz or less) between the photosensitive drum 2 and the S-electrode developing roller 3, the toner 7 is transferred according to the latent image and developed. I will do it.
また、回転部材１２を導電処理し、現像ロー５３との間
に現像剤供給バイアス電圧を印加し、トナー７の移送量
をコントロールすることになる。Further, the rotating member 12 is subjected to conductive treatment, and a developer supply bias voltage is applied between it and the developing row 53 to control the amount of toner 7 transferred.
このとき、感光体ドラム２と現像ローラ３との間隙Ｇは
、感光体ドラム２と現像ローラ３が等速である場合には
、実質的に接触状態でも良いが、階調性を得るためには
、非接触とする方が有利である。At this time, the gap G between the photoreceptor drum 2 and the developing roller 3 may be substantially in contact when the photoreceptor drum 2 and the developing roller 3 are at the same speed, but in order to obtain gradation, It is advantageous to use non-contact.
また、交流バイアスを用いる場合には、現像ローラ３と
感光体ドラム２は等速である必要はなく、現像ローラ３
のスピードをある程度速くした方が９度が高くなる。Further, when using an AC bias, the developing roller 3 and the photosensitive drum 2 do not need to be at the same speed, and the developing roller 3
If you increase the speed to some extent, the 9th degree will be higher.
以上の説明かられかるように本装置では、帯電能力以上
の多量のトナー７が一度にトナー層７′の形成部である
第２の部屋１０側に供給されるのが防止されるため安定
したトナー層７′の形成と帯電が行われる。また、回転
部材１２の材質や形状を変えることにより、トナー特性
に合せた現像装置の設計もできるため、従来のトナー特
性改善にのみ頼っていたため本方式現像装置に用いるト
ナーの開発が困難であった点も大幅に改善され使用初期
から長期に亙ってかぶりのない安定した画像が得られる
。As can be seen from the above description, in this device, a large amount of toner 7 exceeding the charging capacity is prevented from being supplied at once to the second chamber 10 side where the toner layer 7' is formed, so that the device is stable. The toner layer 7' is formed and charged. Furthermore, by changing the material and shape of the rotating member 12, it is possible to design a developing device that matches the characteristics of the toner, which makes it difficult to develop toner for use in this type of developing device because conventional methods relied only on improving toner characteristics. These features have also been significantly improved, and stable images without fogging can be obtained from the initial stage of use over a long period of time.
［発明の効果］
以上説明したように、本発明によれば簡単な構成であり
ながら、トナー１の形成と帯電が良好に行われ、使用初
期から長期に亙ってかぶりの無い安定した現像状態が得
られる現像装置を提供できるといった効果を奏する。[Effects of the Invention] As explained above, according to the present invention, although the configuration is simple, the formation and charging of the toner 1 are performed well, and a stable developing state with no fog can be achieved from the initial stage of use over a long period of time. It is possible to provide a developing device that can obtain the following effects.
図面は本発明の一実施例を示すもので、第１図は感光体
ドラムに対向して配置した状態の概略的縦断側面図、第
２図は概略的斜視図である。
１・・・現像装置、２・・・像担持体（感光体）、３・
・・現像部材（現像ローラ）、７′・・・現像剤（トナ
ー）、８・・・第１の部屋、９・・・開口部、１０・・
・第２の部屋、１２・・・回転部材、１５・・・現像剤
規制部材（トナー規制部材）。
出願人代理人 弁理士 鈴江武彦
第１図The drawings show an embodiment of the present invention, and FIG. 1 is a schematic vertical side view of the device disposed facing the photosensitive drum, and FIG. 2 is a schematic perspective view. 1... Developing device, 2... Image carrier (photoreceptor), 3...
...Developing member (developing roller), 7'... Developer (toner), 8... First chamber, 9... Opening, 10...
- Second chamber, 12... Rotating member, 15... Developer regulating member (toner regulating member). Applicant's agent Patent attorney Takehiko Suzue Figure 1
Claims (4)
部屋と開口部を介して連通する第２の部屋と、この第２
の部屋内に収容され回転に伴って現像剤を搬送する回転
部材と、この回転部材の近傍に設けられ回転部材を介し
て供給される現像剤を静電潜像面に転移させるための現
像部材と、前記現像部材に向けて圧接する状態に設けら
れ均一な厚さの現像剤層を前記現像剤上に形成する現像
剤規制部材とを具備してなることを特徴とする現像装置
。(1) A first chamber that accommodates a powder developer, a second chamber that communicates with the first chamber through an opening, and a second chamber that communicates with the first chamber through an opening.
a rotating member that is housed in a chamber and conveys developer as it rotates, and a developing member that is provided near this rotating member and that transfers the developer supplied via the rotating member to the electrostatic latent image surface. and a developer regulating member that is provided in pressure contact with the developing member and forms a developer layer of uniform thickness on the developer.
特許請求の範囲第１項記載の現像装置。(2) The developing device according to claim 1, wherein the developing member is a developing roller.
されたものであることを特徴とする特許請求の範囲第１
項記載の現像装置。(3) Claim 1, characterized in that the rotating member is made of an elastic body or a brush-like material.
Developing device as described in section.
粉とよりなる磁気ブラシであることを特徴とする特許請
求の範囲第１項記載の現像装置。 （４）回転部材と現像部材との間には現像剤供給バイア
ス電圧が、また、現像部材と静電潜像形成面との間には
現像バイアスがそれぞれ印加されていることを特徴とす
る特許請求の範囲第１項記載の現像装置。(4) The developing device according to claim 1, wherein the rotating member is a magnetic brush made of a magnetic roll and magnetic powder attracted to the roll. (4) A patent characterized in that a developer supply bias voltage is applied between the rotating member and the developing member, and a developing bias is applied between the developing member and the electrostatic latent image forming surface. A developing device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61193502A JPH0812509B2 (en) | 1986-08-19 | 1986-08-19 | Development device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61193502A JPH0812509B2 (en) | 1986-08-19 | 1986-08-19 | Development device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6348583A true JPS6348583A (en) | 1988-03-01 |
| JPH0812509B2 JPH0812509B2 (en) | 1996-02-07 |
Family
ID=16309116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61193502A Expired - Lifetime JPH0812509B2 (en) | 1986-08-19 | 1986-08-19 | Development device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0812509B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5792358A (en) * | 1980-12-01 | 1982-06-08 | Ricoh Co Ltd | Developing device |
| JPS61159675A (en) * | 1985-01-07 | 1986-07-19 | Ricoh Co Ltd | Developing device |
-
1986
- 1986-08-19 JP JP61193502A patent/JPH0812509B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5792358A (en) * | 1980-12-01 | 1982-06-08 | Ricoh Co Ltd | Developing device |
| JPS61159675A (en) * | 1985-01-07 | 1986-07-19 | Ricoh Co Ltd | Developing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0812509B2 (en) | 1996-02-07 |
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